/* PC端显示 */
@media screen and (min-width:1000px){
/*主要内容*/
	content{
		background:rgba(23, 23, 50, 0.5);
	}

	.first_div{
		width:100%;
		margin:0;
		padding: 0;
		height:auto;
		float: left;
		background:inherit;
		overflow: hidden;
	}

	.first_div .content_first, .first_div .content_first_picture, .first_div .content_second, .first_div .content_second_picture{
		width:50%;
		float:left;
		overflow: hidden;
		display: inline-block;
	}

	.first_div .content_first, .first_div .content_second{
		width: 46%;
		text-align: center;
		font-size: 1.3em;
		color: #fdfdfd;
		margin-top: 5%;
		margin-left: 2%;
		margin-right: 2%;
		padding:5px,;
		background:rgba(105,105,105,0.9);
	}

	.first_div .content_first ul{
		height:10%;
		text-decoration: none;
		margin-bottom:2%;
		padding: 0;
		list-style: none;
	}

	.first_div .content_first ul li, .first_div .content_first ul li h1{
		display: inline;
	}

	.content_first_picture img, .content_second_picture img{
		width:100%;
	}
}